CN104900467A - Radial radiating beam electron gun suitable for radial logarithmic spiral microstrip slow-wave line - Google Patents
Radial radiating beam electron gun suitable for radial logarithmic spiral microstrip slow-wave line Download PDFInfo
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- CN104900467A CN104900467A CN201510271145.XA CN201510271145A CN104900467A CN 104900467 A CN104900467 A CN 104900467A CN 201510271145 A CN201510271145 A CN 201510271145A CN 104900467 A CN104900467 A CN 104900467A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
- H01J29/48—Electron guns
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
- H01J29/04—Cathodes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
- H01J29/48—Electron guns
- H01J29/484—Eliminating deleterious effects due to thermal effects, electrical or magnetic fields; Preventing unwanted emission
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
- H01J29/48—Electron guns
- H01J29/485—Construction of the gun or of parts thereof
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Abstract
The invention discloses a radial radiating beam electronic gun suitable for radial logarithmic spiral microstrip slow-wave lines, and is an electronic gun in the technical field of vacuum electronic devices. The radial radiating beam electronic gun suitable for radial logarithmic spiral microstrip slow-wave lines ensures better synchronization with radial logarithmic spiral microstrip slow-wave lines employing planar sector electron beams for working. The radial radiating beam electronic gun comprises a gun casing, and a cathode assembly, a control electrode and an anode arranged in the gun casing, wherein the cathode head of the cathode assembly is placed in a radial hole in the control electrode. The invention is especially for a radial radiating beam electron gun cooperatively used with radial logarithmic spiral microstrip slow-wave lines.
Description
Technical field
The invention belongs to vacuum electron device technical field, relate to a kind of electron gun, particularly relate to a kind of radially electron beam electron gun being applicable to radial logarithmic spiral micro-stripe slow wave line.
Background technology
Travelling wave tube is an of paramount importance class microwave power amplifier part in vacuum microwave person in electronics, it has that power is large, efficiency is high, gain is high, bandwidth and life-span long feature, thus be widely used in the fields such as radar, guidance, interference, communication, microwave remote sensing, radiation measurement, its performance directly decides the level of equipment.
A typical travelling wave tube is made up of electron gun, focusing system, slow wave line (slow wave structure), input/output unit and collector five part.As the core component of travelling wave tube, the task of slow wave line is carry high frequency electromagnetic running wave and makes electromagnetic phase velocity drop to synchronizing speed, and realize the modulation of electromagnetic wave to electron beam, thus making electron beam surrender DC energy amplification radio-frequency field, its performance quality directly determines the bandwidth of operation of travelling wave tube, power output and efficiency etc.
Logarithmic spiral slow wave line is a kind of slow wave line with very low operation voltage, and its operating voltage, within hectovolt, greatly reduces the demand of power supply.The applicant is just that 201210409251.6 patent of invention names are called that " a kind of radial logarithmic spiral micro-stripe slow wave line " carried out application to application number on October 24th, 2012, it is a kind of quasi-periodic structure radially, adopt the work of plane sector electron beam, comprise the radial logarithmic spiral metal tape of fan-shaped metal shielding, fan-shaped medium base plate and angle, the radial logarithmic spiral metal tape of angle intercepts by single radial logarithmic spiral microstrip line a part of camber line that angle is θ, and replaces intercepting the adjacent head and the tail of camber line the metal tape composition connected.Adopt the travelling wave tube of the radial logarithmic spiral micro-stripe slow wave line of the present invention, its operating voltage, far below the low-voltage helix TWT of routine, then has larger advantage relative to coupling cavity class travelling wave tube.
Use the radial direction bundle travelling wave tube of radial logarithmic spiral micro-stripe slow wave line, while significantly reducing travelling wave tube operating voltage, there is higher output power, and volume is little, low cost of manufacture.And the electron beam that existing electron gun is launched is cross circular section cylindricality electron beam mostly, rectangular strip shape electron beam, oval electron beam or edge are the electron beam of the various shape and structures such as the ribbon-like electron note of ellipse, thus during these existing electron guns work with can not carry out well between the radial logarithmic spiral micro-stripe slow wave line that have employed the work of plane sector electron beam in foregoing invention patent application synchronous, thus can not produce power output or power output is very little, thus cause the inefficiency of travelling wave tube.
Synchronous technical problem can not be carried out well with between the radial logarithmic spiral micro-stripe slow wave line that have employed the work of plane sector electron beam to overcome existing electron gun, the present invention is directed to the radial logarithmic spiral micro-stripe slow wave line of foregoing invention patent application, and provide a kind of radially electron beam electron gun being exclusively used in radial logarithmic spiral micro-stripe slow wave line.
Summary of the invention
Goal of the invention of the present invention is: the existing electron gun existed for prior art can not carry out synchronous technical problem well with between the radial logarithmic spiral micro-stripe slow wave line that have employed the work of plane sector electron beam, a kind of radially electron beam electron gun being applicable to radial logarithmic spiral micro-stripe slow wave line is provided, make this electron gun with can carry out well between the radial logarithmic spiral micro-stripe slow wave line that have employed the work of plane sector electron beam synchronous.
To achieve these goals, the technical solution used in the present invention is:
Be applicable to a radially electron beam electron gun for radial logarithmic spiral micro-stripe slow wave line, comprise rifle shell, be provided with cathode assembly, control pole and anode in described rifle shell, the cathode taps of described cathode assembly is placed in the radial hole of control pole; The axial width h of cathode taps
c=(0.2 ~ 2) mm, controls the axial width h of the radial hole of pole
k=h
c+ (0.1 ~ 1) mm, controls the axial width h of the opening step of pole
k1=(1 ~ 2) mm, the axial width h of the axially open of anode
a=(0.1 ~ 4) mm, the end face of cathode taps near anode side and the distance d of control pole radial hole near the end of anode side
ck=(0 ~ 1.5) mm, the distance d of cathode taps and anode
ca=(0.5 ~ 1.5) mm, the cathode emission face of cathode taps is the hyperboloid type surface of emission, the radius of curvature r in the cathode emission face of cathode taps
c=(0.3 ~ 10) mm, controls the inclination angle ψ of the pole radial hole interior angle slope projection of both sides to the left and right
1=(25 ~ 75) °, the inclination angle ψ of the radial hole of anode
2=(0 ~ 45) °; The radial radius R of anode end face
a=(14 ~ 17) mm, the radial radius R of negative electrode end face
c=(12 ~ 16) mm, controls the radial radius R in extreme face
k1=(12.5 ~ 16.5) mm, controls the radial radius R of pole opening step terminations
k2=R
k1-(0.1 ~ 1) mm, the angle angle θ of cathode taps end face
c=(1 ~ 180) °, controls the angle angle θ of the radial hole of pole
k1=θ c+(0.4 ~ 8) °, control the angle angle θ in extreme face
k2=θ
k1+ (2 ~ 4) °, the angle angle θ of anode end face
a=θ
c+ (2 ~ 6) °.
As preferred version of the present invention, described rifle shell comprise connect successively rifle shell bottom end cover, porcelain cylinder and rifle shell upper end cover on porcelain cylinder, rifle shell in porcelain cylinder, rifle shell under rifle shell, described anode is arranged on the end face of rifle shell upper end cover, described cathode assembly and control pole and to be installed on rifle shell in porcelain cylinder internal cavities.
As preferred version of the present invention, in described rifle shell, porcelain cylinder and rifle shell are provided with between porcelain cylinder and control pole supporting pieces, described control pole supporting pieces is tightly welded with porcelain collet chuck on rifle shell by porcelain cylinder in rifle shell, and described control pole is assemblied in the control pole support groove controlling pole supporting pieces.
As preferred version of the present invention, described cathode assembly comprises cathode taps and cathode support cylinder, described cathode taps is assemblied in the cathode support groove of cathode support cylinder one end, is provided with heated filament and is filled in the heated filament filler between cathode support cylinder inwall and heated filament in the cavity of the described cathode support cylinder other end.
As preferred version of the present invention, also comprise heated filament porcelain tube, described heated filament one end is positioned at heated filament filler, and the described heated filament other end passes heated filament filler and is sheathed in heated filament porcelain tube.
As preferred version of the present invention, be arranged with cathode anchor outside described cathode support cylinder, described cathode support cylinder is fixedly installed in rifle shell by cathode anchor.
As preferred version of the present invention, cathode assembly supporting pieces is provided with between porcelain cylinder in porcelain cylinder and rifle shell under described rifle shell, described cathode assembly supporting pieces is tightly welded with porcelain collet chuck in rifle shell by porcelain cylinder under rifle shell, and described cathode anchor to be set in cathode assembly supporting pieces and to be fixedly installed in rifle shell by cathode assembly supporting pieces.
As preferred version of the present invention, also comprise heat shielding assembly, described heat shielding assembly comprises outer heat shielding cylinder and is sheathed on the internal heat shield cylinder in outer heat shielding cylinder, described internal heat shield cylinder one end is connected with internal heat shield cylinder base, described outer heat shielding cylinder one end is connected with outer heat shielding cylinder base, and described outer heat shielding cylinder base is also fixing between cathode support cylinder and cathode anchor.
In sum, owing to have employed technique scheme, the invention has the beneficial effects as follows:
1, in the present invention, electron gun adopts the cathode taps of above-mentioned ad hoc structure, it is (30 ~ 5000) mA that control pole and anode can produce the electric current radially moved, axially note waist is (0.05 ~ 3.5) mm, radial range is (0.8 ~ 3) mm, angle subtended angle is that the fan-shaped sheet of (1 ~ 100) ° disperses electron beam, and this fan-shaped sheet is dispersed electron beam and can be mated with the radial logarithmic spiral micro-stripe slow wave line in background technology better, thus the functioning efficiency of electronics in raising electron gun, and significantly reducing the electron gun that have employed said structure, while the travelling wave tube operating voltage of slow wave line, there is higher output power, make travelling wave tube volume little, low cost of manufacture.
2, in the present invention, rifle shell comprise connect successively rifle shell bottom end cover, porcelain cylinder and rifle shell upper end cover on porcelain cylinder, rifle shell in porcelain cylinder, rifle shell under rifle shell, a few person is welded to connect by ceramicto-metal seal technique, negative electrode is placed in one, play supporting and location cathode assembly, control the effect of pole, meanwhile, the effect of rifle shell porcelain cylinder is for providing insulation measures between each electrode of electron gun.The upper and lower end cap of rifle shell can weld anode and exhaust pipe assembly etc., assembles with travelling wave tube miscellaneous part.
3, in the present invention, controlling pole is assemblied in the control pole support groove controlling pole supporting pieces, by to measures such as control pole supporting pieces secondary operations, can ensure control the concentricity of pole assembling and control the interelectode dimensions of pole and negative electrode, the electric current that actual transmission is produced is closer to the calculated results.Make the installation of control pole, assembling more stable, and difficult drop-off or drop, electron gun is had beneficial effects such as reliability is high, anti-vibration simultaneously.
4, in the present invention, cathode taps is assemblied in the cathode support groove of cathode support cylinder one end, and heated filament and heated filament filler are set in the cavity of cathode support cylinder opposite side, wherein heated filament filler plays the effect of heat transfer and insulation, the heat of cathode assembly can be made to be more evenly distributed, ensure that heated filament in use can not make to come in contact between heated filament because of factors such as heat effects, causes the situation of heated filament short circuit simultaneously; Heated filament outside heated filament filler is set in heated filament porcelain tube, can ensure that the short circuit between two heated filaments in use can not occur electron gun by this heated filament porcelain tube, ensures the dependability of electron gun; Cathode support cylinder is assemblied on cathode anchor by inside and outside heat shielding cartridge module, and inside and outside heat shielding cylinder adopts the preparation of high-melting-point, low thermal conductivity material, effectively can reduce the thermal loss that thermal radiation and heat transfer cause; The assembling of inside and outside heat shielding cartridge module adopts the mode of slidable fit, according to the fitted position position of the actual size adjustment cathode assembly of rifle shell, can reduce assembly difficulty, and then ensure assembly precision.
5, in the present invention, heat shielding assembly is also provided with in electron gun, heat shielding assembly comprises outer heat shielding cylinder and is sheathed on the internal heat shield cylinder in outer heat shielding cylinder, internal heat shield cylinder one end is connected with internal heat shield cylinder base, outer heat shielding cylinder one end is connected with outer heat shielding cylinder base, inside and outside two-layer heat shielding cylinder the dissipation that effectively can reduce heated filament heat in the electron gun course of work is set, improve heated filament efficiency, and then effectively maintain negative electrode working temperature, work with making cathode stabilization.
Accompanying drawing explanation
Fig. 1 is assembling schematic diagram of the present invention;
Fig. 2 is Anodic of the present invention, controls the axial, cross-sectional view of the optical system of pole and cathode taps composition;
Fig. 3 is Anodic of the present invention, controls the angle sectional view of the optical system of pole and cathode taps composition;
Fig. 4 is the front view controlling pole in the present invention;
Fig. 5 is the left view controlling pole in the present invention;
Fig. 6 is the vertical view controlling pole in the present invention;
Fig. 7 is the emulation experiment axial cross section electron beam trajectory diagram of the embodiment of the present invention one electron gun;
Fig. 8 is the emulation experiment angle cross section electron beam trajectory diagram of the embodiment of the present invention one electron gun;
Fig. 9 is the emulation experiment axial cross section electron beam trajectory diagram of the embodiment of the present invention two electron gun;
Figure 10 is the emulation experiment angle cross section electron beam trajectory diagram of the embodiment of the present invention two electron gun;
Figure 11 is the emulation experiment axial cross section electron beam trajectory diagram of the embodiment of the present invention three electron gun;
Figure 12 is the emulation experiment angle cross section electron beam trajectory diagram of the embodiment of the present invention three electron gun;
Figure 13 is the emulation experiment axial cross section electron beam trajectory diagram of the embodiment of the present invention four electron gun;
Figure 14 is the emulation experiment angle cross section electron beam trajectory diagram of the embodiment of the present invention four electron gun;
Wherein, Reference numeral is: porcelain cylinder in porcelain cylinder, 3-cathode assembly supporting pieces, 4-rifle shell under 1-rifle shell bottom end cover, 2-rifle shell, 5-control porcelain cylinder on pole supporting pieces, 6-rifle shell, 7-rifle shell upper end cover, 8-anode, 9-control pole, 10-cathode taps, 11-cathode support cylinder, 12-heated filament, 13-heated filament filler, 14-outer heat shielding cylinder base, 15-cathode anchor, 16-outer heat shielding cylinder, 17-internal heat shield cylinder, 18-internal heat shield cylinder base, 19-heated filament porcelain tube, 91-slope are protruding.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail.
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
embodiment 1
Be applicable to a radially electron beam electron gun for radial logarithmic spiral micro-stripe slow wave line, in this electron gun and background technology, application number is 201210409251.6, name is called that the slow wave line in " a kind of radial logarithmic spiral micro-stripe slow wave line " application for a patent for invention supports the use.This electron gun comprises rifle shell, is provided with cathode assembly, controls pole 9 and anode 8 in rifle shell.Anode 8 is disc-shaped structure, and the disk centre position of anode 8 offers radial hole, and the angle of the radial hole of anode 8 is determined by the radial subtended angle of cathode taps 10.Controlling pole 9 is also disc-shaped structure, and the disk centre position controlling pole 9 offers radial hole, and when cathode assembly assembles with control pole 9, the cathode taps 10 of cathode assembly is placed in the radial hole of control pole 9; Descend both sides and the angle left and right sides to be provided with slope projection 91 vertically in the radial hole of control pole 9, the effect to fan-shaped radial electron beam axial compression and angle shaping can be played by these slope projections 91.In axial cross section, the axial width h of cathode taps 10
c=0.6mm, controls the axial width h of the radial hole of pole 9
k=h
c+ 0.1=0.7mm, controls the axial width h of the opening step of pole 9
k1=1.5mm, the axial width h of the axially open of anode 8
a=0.62mm, the end face of cathode taps 10 near anode 8 side and the distance d of control pole 9 radial hole near the end of anode 8 side
ck=0.05mm, the distance d of cathode taps 10 and anode 8
ca=0.45mm, the cathode emission face of cathode taps 10 is the hyperboloid type surface of emission, the radius of curvature r in the cathode emission face of cathode taps 10
c=1.19mm, controls the inclination angle ψ of the pole 9 radial hole interior angle slope projection 91 of both sides to the left and right
1=60 °, control the inclination angle ψ of the slope projection 91 of both sides up and down in the radial hole of pole 9
3=45 °, the inclination angle ψ of the radial hole of anode 8
2=4 °; In angle cross section, the radial radius R of anode 8 end face
a=15.35mm, the radial radius R of negative electrode end face
c=14.5mm, controls the radial radius R of pole 9 end face
k1=14.9mm, controls the radial radius R of pole 9 opening step terminations
k2=R
k1-0.1=14.8mm, the angle angle θ of cathode taps 10 end face
c=8 °, control the angle angle θ of the radial hole of pole 9
k1=θ c+4 °=12 °, control the angle angle θ of pole 9 end face
k2=θ
k1+ 3 °=15 °, the angle angle θ of anode 8 end face
a=θ
c+ 14 °=22 °.
Adopt the present embodiment Anodic 8, when controlling the size of pole 9 and cathode taps 10, cathode emission model adopts Space charge limited emission, anode voltage is set to 0V, negative electrode with control pole tension and be set to-1700V, electron gun can produce 148.5mA, axially note the fan-shaped sheet that waist is about 0.45mm, radial range is about 0.9mm, angle subtended angle is 8 ° disperses electron beam.
When adopting CST Particle Studio software to carry out emulation experiment, its axial cross section electron beam trajectory diagram, angle cross section electron beam trajectory diagram are as shown in Figure 7,8.
embodiment 2
On the basis of embodiment one, the axial width h of cathode taps 10
c=0.6 mm, controls the axial width h of the radial hole of pole 9
k=1.6mm, controls the axial width h of the opening step of pole 9
k1=0.7mm, the axial width h of the axially open of anode 8
a=0.46mm, the end face of cathode taps 10 near anode 8 side and the distance d of control pole 9 radial hole near the end of anode 8 side
ck=0.05mm, the distance d of cathode taps 10 and anode 8
ca=0.7mm, the cathode emission face of cathode taps 10 is the face of cylinder type surface of emission, the radius of curvature r in the cathode emission face of cathode taps 10
c→ ∞, controls the inclination angle ψ of the pole 9 radial hole interior angle slope projection 91 of both sides to the left and right
1=60 °, control the inclination angle ψ of the slope projection 91 of both sides up and down in the radial hole of pole 9
3=45 °, the inclination angle ψ of the radial hole of anode 8
2=4 °; In angle cross section, the radial radius R of anode 8 end face
a=15.6mm, the radial radius R of negative electrode end face
c=14.5mm, controls the radial radius R of pole 9 end face
k1=15.2mm, controls the radial radius R of pole 9 opening step terminations
k2=15.1mm, the angle angle θ of cathode taps 10 end face
c=8 °, control the angle angle θ of the radial hole of pole 9
k1=9 °, control the angle angle θ of pole 9 end face
k2=12 °, the angle angle θ of anode 8 end face
a=11 °.
Adopt the present embodiment Anodic 8, when controlling the size of pole 9 and cathode taps 10, cathode emission model adopts Space charge limited emission, anode voltage is set to 0V, negative electrode with control pole tension and be set to-1800V, electron gun can produce 84.9mA, axially note the fan-shaped sheet that waist is about 0.37mm, radial range is about 1.5mm, angle subtended angle is 8 ° disperses electron beam.
When adopting CST Particle Studio software to carry out emulation experiment, its axial cross section electron beam trajectory diagram, angle cross section electron beam trajectory diagram are as shown in Fig. 9,10.
embodiment 3
On the basis of embodiment one, the axial width h of cathode taps 10
c=0.6mm, controls the axial width h of the radial hole of pole 9
k=0.6mm, controls the axial width h of the opening step of pole 9
k1=0.7mm, the axial width h of the axially open of anode 8
a=0.58mm, the end face of cathode taps 10 near anode 8 side and the distance d of control pole 9 radial hole near the end of anode 8 side
ck=0.05mm, the distance d of cathode taps 10 and anode 8
ca=0.45mm, the cathode emission face of cathode taps 10 is the hyperboloid type surface of emission, the radius of curvature r in the cathode emission face of cathode taps 10
c=1.19mm, controls the inclination angle ψ of the pole 9 radial hole interior angle slope projection 91 of both sides to the left and right
1=60 °, control the inclination angle ψ of the slope projection 91 of both sides up and down in the radial hole of pole 9
3=45 °, the inclination angle ψ of the radial hole of anode 8
2=3 °; In angle cross section, the radial radius R of anode 8 end face
a=15.35mm, the radial radius R of negative electrode end face
c=14.5mm, controls the radial radius R of pole 9 end face
k1=14.9mm, controls the radial radius R of pole 9 opening step terminations
k2=14.8mm, the angle angle θ of cathode taps 10 end face
c=160 °, control the angle angle θ of the radial hole of pole 9
k1=164 °, control the angle angle θ of pole 9 end face
k2=166 °, the angle angle θ of anode 8 end face
a=182 °.
Adopt the present embodiment Anodic 8, when controlling the size of pole 9 and cathode taps 10, cathode emission model adopts Space charge limited emission, anode voltage is set to 0V, negative electrode with control pole tension and be set to-1700V, electron gun can produce 2690mA, axially note the fan-shaped sheet that waist is about 0.39mm, radial range is about 1.36mm, angle subtended angle is 160 ° disperses electron beam.
When adopting CST Particle Studio software to carry out emulation experiment, its axial cross section electron beam trajectory diagram, angle cross section electron beam trajectory diagram are as shown in Figure 11,12.
embodiment 4
On the basis of embodiment one, the axial width h of cathode taps 10
c=0.54mm, controls the axial width h of the radial hole of pole 9
k=0.56mm, controls the axial width h of the opening step of pole 9
k1=0.74mm, the axial width h of the axially open of anode 8
a=0.5mm, the end face of cathode taps 10 near anode 8 side and the distance d of control pole 9 radial hole near the end of anode 8 side
ck=0.08mm, the distance d of cathode taps 10 and anode 8
ca=0.78mm, the cathode emission face of cathode taps 10 is the hyperboloid type surface of emission, the radius of curvature r in the cathode emission face of cathode taps 10
c=0.66mm, controls the inclination angle ψ of the pole 9 radial hole interior angle slope projection 91 of both sides to the left and right
1=60 °, control the inclination angle ψ of the slope projection 91 of both sides up and down in the radial hole of pole 9
3=90 °, the inclination angle ψ of the radial hole of anode 8
2=0 °; In angle cross section, the radial radius R of anode 8 end face
a=14.78mm, the radial radius R of negative electrode end face
c=14.4mm, controls the radial radius R of pole 9 end face
k1=14.98mm, controls the radial radius R of pole 9 opening step terminations
k2=R
k1-0=14.98mm, the angle angle θ of cathode taps 10 end face
c=4 °, control the angle angle θ of the radial hole of pole 9
k1=12 °, control the angle angle θ of pole 9 end face
k2=14 °, the angle angle θ of anode 8 end face
a=12 °.
Adopt the present embodiment Anodic 8, when controlling the size of pole 9 and cathode taps 10, cathode emission model adopts Space charge limited emission, anode voltage is set to 0V, negative electrode with control pole tension and be set to-1500V, the fan-shaped sheet that electron gun can produce 167.1mA, axially note, and waist is about 0.4mm, radial range is about 0.5mm, angle subtended angle is about 6 ° disperses electron beam.
As can be seen from the sectional view of electron beam track, owing to there is no ψ
3disperse electron beam to fan-shaped sheet to retrain in angle both sides, under the effect of electron beam self space charge force, its angle is greater than the angle angle θ of cathode taps 10 end face
c=4 °, this is not the result that we want.
In addition, electron beam range is too little, and its effect is, electron beam just starts to disperse before admission passage, and like this, electron beam can not have effect spread in passage, and therefore, these group data can not be for the production of.
When adopting CST Particle Studio software to carry out emulation experiment, its axial cross section electron beam trajectory diagram, angle cross section electron beam trajectory diagram are as shown in Figure 13,14.
embodiment 5
On the basis of embodiment one, embodiment two or embodiment three, this rifle shell comprise set gradually rifle shell bottom end cover 1, porcelain cylinder 6 and rifle shell upper end cover 7 on porcelain cylinder 4, rifle shell in porcelain cylinder 2, rifle shell under rifle shell, under rifle shell bottom end cover 1, rifle shell, in porcelain cylinder 2, rifle shell, on porcelain cylinder 4, rifle shell, porcelain cylinder 6 and rifle shell upper end cover 7 are welded to connect formation hollow structure by ceramicto-metal seal technique.Anode 8 is arranged on the end face of rifle shell upper surface, the end face of wherein rifle shell upper surface is provided with draw-in groove, this draw-in groove can be the draw-in groove of annular, the end face of anode 8 is provided with fixture block or the snap ring of corresponding rifle shell upper surface draw-in groove, draw-in groove is connected with fixture block or snap ring, and anode 8 is fixedly mounted on rifle shell upper surface.Cathode assembly and control pole 9 are installed with in the internal cavities of porcelain cylinder 6 on rifle shell.
Preferably, in rifle shell, porcelain cylinder 4 and rifle shell are provided with between porcelain cylinder 6 and control pole supporting pieces 5, the both ends of the surface of this control pole supporting pieces 5 are clamped by porcelain cylinder 6 on porcelain cylinder 4, rifle shell in rifle shell and are welded and fixed respectively.Controlling supporting pieces 5 center, pole to offer for assembling control pole 9 support groove controlling pole 9, controlling pole 9 and being assemblied in control pole 9 support groove controlling pole supporting pieces 5 also fixing.
embodiment 6
On the basis of embodiment one, embodiment two, embodiment three or embodiment five, this cathode assembly comprises cathode taps 10, cathode support cylinder 11, heated filament 12 and heated filament filler 13.Wherein, cathode taps 10 is assemblied in the cathode support groove of cathode support cylinder 11 one end, and this cathode support groove is opened in the side near anode 8 on cathode support cylinder 11.The end face of cathode support cylinder 11 other end caves inward formation cavity, and in the cavity of cathode support cylinder 11, be provided with heated filament 12 and heated filament filler 13, this heated filament 12 one end spiral is arranged in the cavity of cathode support cylinder 11, and heated filament 12 other end passes cavity with external devices is connected, heated filament filler 13 is filled between cathode support cylinder 11 and heated filament 12.
Preferably, also comprise heated filament porcelain tube 19, the heated filament 12 passing cathode support cylinder 11 cavity is sheathed in heated filament porcelain tube 19.
Preferably, cathode support cylinder 11 is outer is also arranged with cathode anchor 15, and cathode support cylinder 11 is fixedly installed in rifle shell by cathode anchor 15.
Preferably, under rifle shell, be also provided with cathode assembly supporting pieces 3 in porcelain cylinder 2 and rifle shell between porcelain cylinder 4, the both ends of the surface of this cathode assembly supporting pieces 3 are clamped by porcelain cylinder 2 under porcelain cylinder 4, rifle shell in rifle shell and are welded and fixed respectively.Cathode assembly supporting pieces 3 center offers the support groove for assembling cathode anchor 15, and cathode anchor 15 is assemblied in the support groove of cathode assembly supporting pieces 3 also fixing.
embodiment 7
On the basis of embodiment one, embodiment two, embodiment three, embodiment five or embodiment six, heat shielding assembly is also provided with in the rifle shell of electron gun, this heat shielding assembly comprises outer heat shielding cylinder 16 and internal heat shield cylinder 17, and this internal heat shield cylinder 17 is sheathed in outer heat shielding cylinder 16.Internal heat shield cylinder 17 one end is connected with internal heat shield cylinder base 18, and outer heat shielding cylinder 16 one end is connected with outer heat shielding cylinder base 14, and internal heat shield cylinder base 18 and outer heat shielding cylinder base 14 lay respectively at the both sides of heat shielding assembly.Outer heat shielding cylinder base 14 is between cathode support cylinder 11 and cathode anchor 15, and cathode support cylinder 11 is all fixedly connected with cathode anchor 15 with outer heat shielding cylinder base 14, outer heat shielding cylinder base 14.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. one kind is applicable to the radially electron beam electron gun of radial logarithmic spiral micro-stripe slow wave line, comprise rifle shell, be provided with cathode assembly in described rifle shell, control pole (9) and anode (8), the cathode taps (10) of described cathode assembly is placed in the radial hole of control pole (9); It is characterized in that, the axial width h of cathode taps (10)
c=(0.2 ~ 2) mm, controls the axial width h of the radial hole of pole (9)
k=h
c+ (0.1 ~ 1) mm, controls the axial width h of the opening step of pole (9)
k1=(1 ~ 2) mm, the axial width h of the axially open of anode (8)
a=(0.1 ~ 4) mm, the end face of cathode taps (10) near anode (8) side and the distance d of control pole (9) radial hole near the end of anode (8) side
ck=(0 ~ 1.5) mm, the distance d of cathode taps (10) and anode (8)
ca=(0.5 ~ 1.5) mm, the cathode emission face of cathode taps (10) is the radius of curvature r in the hyperboloid type surface of emission, the cathode emission face of cathode taps (10)
c=(0.3 ~ 10) mm, controls the inclination angle ψ of pole (9) the radial hole interior angle slope projection (91) of both sides to the left and right
1=(25 ~ 75) °, the inclination angle ψ of the radial hole of anode (8)
2=(0 ~ 45) °; The radial radius R of anode (8) end face
a=(14 ~ 17) mm, the radial radius R of negative electrode end face
c=(12 ~ 16) mm, controls the radial radius R of pole (9) end face
k1=(12.5 ~ 16.5) mm, controls the radial radius R of pole (9) opening step terminations
k2=R
k1 -(0.1 ~ 1) mm, the angle angle θ of cathode taps (10) end face
c=(1 ~ 180) °, controls the angle angle θ of the radial hole of pole (9)
k1=θ c+(0.4 ~ 8) °, control the angle angle θ of pole (9) end face
k2=θ
k1+ (2 ~ 4) °, the angle angle θ of anode (8) end face
a=θ
c+ (2 ~ 6) °.
2. be applicable to the radially electron beam electron gun of radial logarithmic spiral micro-stripe slow wave line as claimed in claim 1, it is characterized in that, described rifle shell comprise connect successively rifle shell bottom end cover (1), porcelain cylinder (6) and rifle shell upper end cover (7) on porcelain cylinder (4), rifle shell in porcelain cylinder (2), rifle shell under rifle shell, described anode (8) is arranged on the end face of rifle shell upper end cover (7), described cathode assembly and control pole (9) and to be installed on rifle shell in porcelain cylinder (6) internal cavities.
3. be applicable to the radially electron beam electron gun of radial logarithmic spiral micro-stripe slow wave line as claimed in claim 2, it is characterized in that, in described rifle shell, porcelain cylinder (4) and rifle shell are provided with between porcelain cylinder (6) and control pole supporting pieces (5), described control pole supporting pieces (5) to be clamped with porcelain cylinder (6) on rifle shell by porcelain cylinder (4) in rifle shell and welds, and described control pole (9) is assemblied in control pole (9) support groove controlling pole supporting pieces (5).
4. be applicable to the radially electron beam electron gun of radial logarithmic spiral micro-stripe slow wave line as claimed in claim 1, it is characterized in that, described cathode assembly comprises cathode taps (10) and cathode support cylinder (11), described cathode taps (10) is assemblied in the cathode support groove of cathode support cylinder (11) one end, is provided with heated filament (12) and is filled in the heated filament filler (13) between cathode support cylinder (11) inwall and heated filament (12) in the cavity of described cathode support cylinder (11) other end.
5. be applicable to the radially electron beam electron gun of radial logarithmic spiral micro-stripe slow wave line as claimed in claim 4, it is characterized in that, also comprise heated filament porcelain tube (19), described heated filament (12) one end is positioned at heated filament filler (13), and described heated filament (12) other end passes heated filament filler (13) and is sheathed in heated filament porcelain tube (19).
6. be applicable to the radially electron beam electron gun of radial logarithmic spiral micro-stripe slow wave line as claimed in claim 4, it is characterized in that, be arranged with cathode anchor (15) outside described cathode support cylinder (11), described cathode support cylinder (11) is fixedly installed in rifle shell by cathode anchor (15).
7. be applicable to the radially electron beam electron gun of radial logarithmic spiral micro-stripe slow wave line as claimed in claim 6, it is characterized in that, cathode assembly supporting pieces (3) is provided with between porcelain cylinder (4) in porcelain cylinder (2) and rifle shell under described rifle shell, described cathode assembly supporting pieces (3) to be clamped with porcelain cylinder (4) in rifle shell by porcelain cylinder (2) under rifle shell and welds, and described cathode anchor (15) to be set in cathode assembly supporting pieces (3) and to be fixedly installed in rifle shell by cathode assembly supporting pieces (3).
8. be applicable to the radially electron beam electron gun of radial logarithmic spiral micro-stripe slow wave line as claimed in claim 1, it is characterized in that, also comprise heat shielding assembly, the internal heat shield cylinder (17) that described heat shielding assembly comprises outer heat shielding cylinder (16) and is sheathed in outer heat shielding cylinder (16), described internal heat shield cylinder (17) one end is connected with internal heat shield cylinder base (18), described outer heat shielding cylinder (16) one end is connected with outer heat shielding cylinder base (14), and described outer heat shielding cylinder base (14) is positioned between cathode support cylinder (11) and cathode anchor (15) also fixing.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510271145.XA CN104900467B (en) | 2015-05-26 | 2015-05-26 | It is applied to the radially electronics note electron gun of radial direction logarithmic spiral micro-stripe slow wave line |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510271145.XA CN104900467B (en) | 2015-05-26 | 2015-05-26 | It is applied to the radially electronics note electron gun of radial direction logarithmic spiral micro-stripe slow wave line |
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| CN104900467A true CN104900467A (en) | 2015-09-09 |
| CN104900467B CN104900467B (en) | 2017-03-08 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI714108B (en) * | 2018-11-28 | 2020-12-21 | 日商紐富來科技股份有限公司 | Electron guns for electron beam tools |
| CN112542369A (en) * | 2020-12-09 | 2021-03-23 | 成都国光电气股份有限公司 | Slotted heat shield structure for quick start cathode and assembly method thereof |
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| JPH0785812A (en) * | 1993-09-04 | 1995-03-31 | Gold Star Co Ltd | Crt electron gun having electron-beam-divergence-angle controlled by current quantity |
| US20030117054A1 (en) * | 2000-12-26 | 2003-06-26 | Makoto Maeda | Cathode structure, and production method therefor and electron gun and cathode ray tube |
| CN102903587A (en) * | 2012-10-24 | 2013-01-30 | 电子科技大学 | Radial logarithmic spiral micro-stripe slow wave line |
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2015
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|---|---|---|---|---|
| JPH0785812A (en) * | 1993-09-04 | 1995-03-31 | Gold Star Co Ltd | Crt electron gun having electron-beam-divergence-angle controlled by current quantity |
| US20030117054A1 (en) * | 2000-12-26 | 2003-06-26 | Makoto Maeda | Cathode structure, and production method therefor and electron gun and cathode ray tube |
| CN102903587A (en) * | 2012-10-24 | 2013-01-30 | 电子科技大学 | Radial logarithmic spiral micro-stripe slow wave line |
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| 王少萌，等: "角度对数曲折线慢波系统的传输特性研究", 《中国电子学会真空电子学分会第十九届学术年会论文集（上册）》 * |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI714108B (en) * | 2018-11-28 | 2020-12-21 | 日商紐富來科技股份有限公司 | Electron guns for electron beam tools |
| CN112542369A (en) * | 2020-12-09 | 2021-03-23 | 成都国光电气股份有限公司 | Slotted heat shield structure for quick start cathode and assembly method thereof |
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| Publication number | Publication date |
|---|---|
| CN104900467B (en) | 2017-03-08 |
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